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Reports interfaces that have no concrete subclasses.
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<p>Configure the inspection:</p>
<ul>
  <li>
    Use the list below to add annotations. Interfaces declared with
    one of these annotations will be ignored by the inspection.
  </li>
  <li>
    Use the checkbox below to ignore interfaces that only declare constant fields.
    Such interfaces may still be usable even without implementations.
  </li>
</ul>
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